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Document signbitm2.

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gcc/ChangeLog:

	* doc/md.texi: Document signbitm2.
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liuhongt
2023-03-31 14:52:51 +08:00
parent 5f10c7f2d8
commit b551ea3799
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@@ -6030,6 +6030,17 @@ floating-point mode.
This pattern is not allowed to @code{FAIL}.
@cindex @code{signbit@var{m}2} instruction pattern
@item @samp{signbit@var{m}2}
Store the sign bit of floating-point operand 1 in operand 0.
@var{m} is either a scalar or vector mode. When it is a scalar,
operand 1 has mode @var{m} but operand 0 must have mode @code{SImode}.
When @var{m} is a vector, operand 1 has the mode @var{m}.
operand 0's mode should be an vector integer mode which has
the same number of elements and the same size as mode @var{m}.
This pattern is not allowed to @code{FAIL}.
@cindex @code{significand@var{m}2} instruction pattern
@item @samp{significand@var{m}2}
Store the significand of floating-point operand 1 in operand 0.